Thordisa filix? from northern Spain
March 26, 2008
From: Jacinto Pérez
Note added 27 March 2008: This is Thordisa azmanii [see message #21477]
Hello Bill,
I found this nudibranch in Galicia (north of Spain), what is it?
Locality: Sea (Ria), 25 meters, Spain, Atlantic Ocean, 27 October 2007, on Sponge. Length: 20 mm.. Photographer: Jacinto Pérez.
Thanks,
Jacinto Pérez
buceo@hydronauta.com
Pérez, J., 2008 (Mar 26) Thordisa filix? from northern Spain. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21053Dear Jacinto,
I am not an expert on nudirbanchs from your part of the world but I think this is Thordisa filix. It is normally thought of as Mediterranean but I see that Cervera et al (2006) record it from Galicia, on the Atlantic coast. Species of Thordisa have taepring retractile papillae over their mantle. Looking at your photos I am pretty sure the papillae are retracted. Then again I could be wrong, so let's wait for some words from local experts.
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Cervera, J. L., Calado, G., Gavaia, C., Malaquias, M. A. E., Templado, J., Ballesteros, M., García-Gómez, J. C., and Megina, C. (2006) An annotated and updated checklist of the opisthobranchs (Mollusca: Gastropoda) from Spain and Portugal (including islands and archipelagos). Boletín Instituto Espanol de Oceanografía 20: 1-122.
Best wishes,
Bill Rudman
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